It's a Dirty Business

Watch Channel 4's documentary about the state of the water industry.

Manchester Withington - 2025 Sewage

Polluted by sewage 978 hours in 2025 , monitoring offline 1,856 hours , potential overflows 452 hours

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Contains OS Data © Crown copyright & database right 2021-2024
© Top of the Poops 2021-2024

Which Year?

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✔ means we have live data (𝑥 if not)

View Annual Sewage Data

You're looking at the totals that we have calculated for sewage in Manchester Withington for 2025. It is an estimate, based on very poor quality live data from the Water Companies. This may not align with the 'official' reported sewage values from the water companies, which is reported in April following then end of the year - so 2025 numbers are reported in April 2026.

What's a potential overflow? If the CSO goes 'Offline' while its Overflowing, we don't know if it stopped overflowing until we get a 'Stop' event.

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Daily Data

Jan - 285 hours , 6 offline
Feb - 18 hours , 0 offline
Mar - 7 hours
Apr - 0 hours
May - 4 hours , 251 potential
Jun - 57 hours , 200 potential
Jul - 28 hours , 1 offline
Aug - 5 hours , 164 offline
Sept - 111 hours , 720 offline
Oct - 64 hours , 744 offline
Nov - 165 hours , 0 potential
Dec - 228 hours , 11 offline
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
United Utilities Barlow Moor Road / Rowsley Avenue CSO River Mersey 46 278 h 50m 0 h
United Utilities Withington PS River Mersey 58 253 h 1m -
United Utilities Barlow Moor Road / Rowsley Avenue CSO River Mersey 23 211 h 56m -
United Utilities Withington PS River Mersey 13 72 h 59m 11 h
United Utilities Mauldeth Road CSO Chorlton Brook 24 50 h 42m -
United Utilities Mauldeth Road West CSO Chorlton Brook Via Culvert 14 48 h 27m -
United Utilities Edge Lane/Wilbraham Road CSO Chorlton Brook Via Sws 21 29 h 54m 0 h
United Utilities Mauldeth Road CSO Chorlton Brook 7 16 h 22m -
United Utilities Mauldeth Road West CSO Chorlton Brook Via Culvert 3 5 h 17m -
United Utilities Beech Road/Claude Road CSO Chorlton Brook 3 4 h 0 h
United Utilities Burton Road (Withington) CSO River Mersey 4 3 h 4m 452 h
United Utilities Edge Lane/Wilbraham Road CSO Chorlton Brook Via Sws 3 3 h -
United Utilities Barlow Moor Road/Palatine Road CSO River Mersey 1 0 h 38m 1,836 h
United Utilities Burton Road (Withington) CSO River Mersey 0 0 h -
United Utilities Lombard Grove/Lorne Road CSO Cringle Brook 0 0 h -
United Utilities St Werbughes Road / Sandy Lane CSO Chorlton Brook 0 0 h 1 h
United Utilities Wilmslow Road/Brook road CSO Leigh Brook 0 0 h -
United Utilities Edge Lane/Manchester Road/High Lane Chorleton Brook Via Sws 0 0 h -
United Utilities Edge Lane/Manchester Road/High Lane Chorleton Brook Via Sws 0 0 h 6 h
United Utilities Wilmslow Road/Brook road CSO Leigh Brook 0 0 h -
United Utilities Beech Road/Claude Road CSO Chorlton Brook 0 0 h -
United Utilities Lombard Grove/Lorne Road CSO Cringle Brook 0 0 h -
United Utilities Barlow Moor Road/Palatine Road CSO River Mersey 0 0 h -
United Utilities St Werbughes Road / Sandy Lane CSO Chorlton Brook 0 0 h -

Data Sources & Accuracy

EDM (Event Duration Monitoring) data and Consented Discharges to Controlled Waters with Conditions from Environment Agency & Data Map Wales, and Scottish Water

Experimental derived data from Thames Water API, Some data may be missing or inaccurate. Live sewage data from Stream Water API

Uses Environment Agency rainfall data from the real-time data API (Beta) - Rainfall data is delayed by up to two days.

This website is intended to provide an accurate representation of the Environment Agency data. The data is hard to use, and thus some errors may have been made. If you find something that is incorrect, please raise an issue at the GitHub issues page and we'll endeavour to fix it quickly.

This project is not associated, approved or endorsed by any of the companies whose logos you see here.